答案:The COP21 meeting in Paris in 2015, which led to the Paris Agreement.This commits developed and emerging economies to strengthen the responseTo the threat of climate change by keeping a global temperature rise thisCentury well below 2°C (3.6°F) above pre-industrial levels.The Kyoto Protocol was adopted in 1997 and became effective in 2005Without US participation. It was the first international convention to setTargets for emissions of the main GHGs. (P.162-163).